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Full Discussion: Child Killing Parent
Top Forums UNIX for Advanced & Expert Users Child Killing Parent Post 302295064 by Perderabo on Friday 6th of March 2009 01:01:26 PM
Old 03-06-2009
Quote:
Originally Posted by vbe
Whats in script3?
If you have a exec <something else e.g. menu...>
with a badly placed exit (or one too much..)
you can end up having parent script exit also, and so 4 and following are to never run...

I don't follow that. If my script, say pid 1223, invokes script B, a child process is created for script B, let's say it is pid 1337. Now script B can what it wants to pid 1337, but pid 1223 should stay intact.

One thing that script B might do is to obtain the pid of its parent and then explicitly kill that pid. To protect against that, we could do:
( scriptB )
The parentheses create a subshell and the subshell is now the parent of scriptB. We hope that scriptB will ignore its grandparent.

In the worst case,
echo /path/to/scriptB | at now
would totally disconnect scriptB, but now it's hard to wait for scriptB to finish.
 

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LEARN ABOUT DEBIAN

child::link::ipc::pipe::parent

Child::Link::IPC::Pipe::Parent(3pm)			User Contributed Perl Documentation		       Child::Link::IPC::Pipe::Parent(3pm)

NAME

       Child::Link::IPC::Pipe::Parent - Parent object used by the pipe plugin.

SEE ALSO

       This class inherits from:

       Child::Link::Parent
       Child::Link::IPC
       Child::Link::IPC::Pipe

HISTORY

       Most of this was part of Parrallel::Runner intended for use in the Fennec project. Fennec is being broken into multiple parts, this is one
       such part.

FENNEC PROJECT

       This module is part of the Fennec project. See Fennec for more details.	Fennec is a project to develop an extendable and powerful testing
       framework.  Together the tools that make up the Fennec framework provide a potent testing environment.

       The tools provided by Fennec are also useful on their own. Sometimes a tool created for Fennec is useful outside the greator framework.
       Such tools are turned into their own projects. This is one such project.

       Fennec - The core framework
	 The primary Fennec project that ties them all together.

AUTHORS

       Chad Granum exodist7@gmail.com

COPYRIGHT

       Copyright (C) 2010 Chad Granum

       Child is free software; Standard perl licence.

       Child is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
       FITNESS FOR A PARTICULAR PURPOSE.  See the license for more details.

perl v5.10.1							    2011-03-07				       Child::Link::IPC::Pipe::Parent(3pm)
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